weaver_filter_lpf_1100hz.py

"""
/*

FIR filter designed with
http://t-filter.appspot.com

sampling frequency: 44100 Hz

* 0 Hz - 550 Hz
  gain = 1
  desired ripple = 1 dB
  actual ripple = 0.7506232054815403 dB

* 650 Hz - 22050 Hz
  gain = 0
  desired attenuation = -40 dB
  actual attenuation = -40.01626276943492 dB

*/

#define FILTER_TAP_NUM 691


"""


class Filter:
    SAMPLE_RATE = 44100
    LPF_LOW_CUTOFF = 0
    LPF_HIGH_CUTOFF = 1100
    FILTER_TAPS = [
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filter = Filter()